Research Topic: virulence regulation

CWI-MAPKs Regulate the Formation of Hyphopodia Required for Virulence in Ceratocystis fimbriata

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Black rot disease in sweet potatoes is caused by a fungus that uses specialized infection structures called hyphopodia to penetrate plant cells. This study reveals that a cellular signaling pathway involving specific proteins (MAPKs) controls the formation of these infection structures and regulates how the fungus spreads through plants. Understanding this mechanism could help develop new ways to prevent sweet potato infections.

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The Velvet Complex Is Essential for Sclerotia Formation and Virulence in Sclerotinia sclerotiorum

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Scientists studied a destructive fungus that damages crops by identifying key genes controlling its ability to form protective resting structures called sclerotia and cause disease. Using genetic screening techniques, they discovered that two genes called SsLae1 and SsVel1 work together as master controllers of both the fungus’s survival and its ability to infect plants. These findings could help develop new ways to control the disease by targeting these critical genes.

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The Transcription Factor SsSR Mediates Ergosterol Biosynthesis and Virulence in Sclerotinia sclerotiorum

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Scientists discovered that a specific protein called SsSR acts as a master switch controlling how dangerous a fungus called Sclerotinia sclerotiorum becomes when attacking plants. Unlike other protein switches that make the fungus grow faster, this one specifically controls the fungus’s ability to cause infection by managing the production of ergosterol, a critical component of the fungus’s cell membranes. This discovery could lead to new ways to protect crops like oilseed rape from this devastating disease.

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Species-specific circular RNA circDS-1 enhances adaptive evolution in Talaromyces marneffei through regulation of dimorphic transition

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Researchers discovered a special type of RNA called circDS-1 that helps a deadly fungus switch between two different forms depending on temperature. This fungus normally grows as a mold in soil but transforms into a yeast when it infects humans at body temperature. The circDS-1 RNA acts like a molecular switch that controls this transformation and helps the fungus cause infection. This discovery reveals that fungi may use hidden genetic elements beyond traditional genes to adapt to their environment.

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